<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script>
<style>
    #zong{border: 3px solid black;}
    #sousuo{width: 100%;height: 80px; border: 1px solid white;background-color: #242424;
    }
    .input-group{width: 60%;margin: 20px 40px;}
    
    #neirong{height: 240px;width: 100%;} 
    .row1{background-color: rgb(192, 133, 45);}
    .row{height: 200px;width: 100%;margin: 0 auto;} 
    #buttoncolor{background: #242424;}
</style>

<body>
    <br>
    <div id="zong">
        <br>
        <div id="sousuo">
            <div class="col-lg-6">
                <div class="input-group">
                    <input type="text" class="form-control" placeholder="Search for...">
                    <span class="input-group-btn">
                        <button class="btn btn-default" type="button">
                            <span class="glyphicon glyphicon-search" aria-hidden="true"></span>
                        </button>
                    </span>
                </div><!-- /input-group -->
            </div>
        </div>
        <br>
        <div id="neirong">
            <br>
            <div class="row1">
                <div class="col-sm-6 col-md-4">
                    <div class="thumbnail">
                        <div class="caption" style="background-color: rgb(223, 177, 27);">
                            <h3>Thumbnail label</h3>
                            <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam. Donec id elit non mi porta
                                gravida at eget metus. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
                            <p><a href="#" class="btn btn-primary" role="button" id="buttoncolor">Button</a> </p>
                        </div>
                    </div>
                </div>
            </div>

            <div class="row">
                <div class="col-sm-6 col-md-4">
                    <div class="thumbnail">
                        <div class="caption" style="background-color: rgb(223, 177, 27);">
                            <h3>Thumbnail label</h3>
                            <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam.
                                Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies
                                vehicula
                                ut id elit.</p>
                            <p><a href="#" class="btn btn-primary" role="button" id="buttoncolor">Button</a> </p>
                        </div>
                    </div>
                </div>

                <div class="row">
                    <div class="col-sm-6 col-md-4">
                        <div class="thumbnail">
                            <div class="caption" style="background-color: rgb(223, 177, 27);">
                                <h3>Thumbnail label</h3>
                                <p>Cras justo odio, dapibus ac facilisis in, egestas eget quam.
                                    Donec id elit non mi porta gravida at eget metus. Nullam id dolor id nibh ultricies
                                    vehicula
                                    ut id elit.</p>
                                <p><a href="#" class="btn btn-primary" role="button" id="buttoncolor">Button</a> </p>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

        </div>

</body>


</html>